SystemZFrameLowering.h [plain text]
#ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZFRAMELOWERING_H
#define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZFRAMELOWERING_H
#include "llvm/ADT/IndexedMap.h"
#include "llvm/Target/TargetFrameLowering.h"
namespace llvm {
class SystemZTargetMachine;
class SystemZSubtarget;
class SystemZFrameLowering : public TargetFrameLowering {
IndexedMap<unsigned> RegSpillOffsets;
public:
SystemZFrameLowering();
bool isFPCloseToIncomingSP() const override { return false; }
const SpillSlot *getCalleeSavedSpillSlots(unsigned &NumEntries) const
override;
void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
RegScavenger *RS) const override;
bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MBBI,
const std::vector<CalleeSavedInfo> &CSI,
const TargetRegisterInfo *TRI) const override;
bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MBBII,
const std::vector<CalleeSavedInfo> &CSI,
const TargetRegisterInfo *TRI) const
override;
void processFunctionBeforeFrameFinalized(MachineFunction &MF,
RegScavenger *RS) const override;
void emitPrologue(MachineFunction &MF) const override;
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
bool hasFP(const MachineFunction &MF) const override;
int getFrameIndexOffset(const MachineFunction &MF, int FI) const override;
bool hasReservedCallFrame(const MachineFunction &MF) const override;
void eliminateCallFramePseudoInstr(MachineFunction &MF,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI) const
override;
uint64_t getAllocatedStackSize(const MachineFunction &MF) const;
unsigned getRegSpillOffset(unsigned Reg) const {
return RegSpillOffsets[Reg];
}
};
}
#endif